Genesis 26:18-22

(18-22) Isaac digged again the wells... — This activity of Isaac called forth anew the opposition of the Philistines, His first well was in the wady of Gerar, and was the more valuable because it was not the mere remains of the water of the torrent, but was fed by a spring, as we learn from its being called “a well of living water.” But though Isaac had a right to these wells by reason of the old covenant between his father and the king, yet when his claim was resisted he abandoned the well, but in token of displeasure called it Esek, contention. When compelled to resign his next well he called it by a harsher name — Sitnah, enmity; for their opposition was developing into bitter persecution. And now, wearied with the strife, he withdrew far away, and the Philistines, having gained their end, followed him no farther. In quiet, therefore, he again dug a well, and called it Rehoboth, wide open spaces. It has been identified with one in the wady Ruhaibeh now stopped up, but originally twelve feet in diameter and cased with hewn stone. It lies to the south of Beer-sheba, at a distance of 8⅓ leagues, and about forty miles; away from Gerar.